The above image is an artist conception of a trip into the Galactic core. Each frame is a factor of ten smaller than the previous one. Frames A and B show the whole Galaxy and Galactic bulge. Frame C shows the increasing concentration of gas and dark nebula outside the core. Frame D shows the mix of old stars and gas, and Frame E displays the ring of gas outside the Galactic center. Inside of a parsec an accretion disk forms, ending at the edge of a galactic mass black hole.